Add flask app with auto-reload to render the form template

render/templates/options.html

@@ -0,0 +1,14 @@
+<div class="row col-sm-offset-2 col-sm-8">
+    <h3>📝 Submitted form data</h3>
+    <pre><code>{{formdata}}</code></pre>
+</div>
+
+<div class="row col-sm-offset-2 col-sm-8 text-success">
+    {% if options %}
+    <h3>✅ Parsed spawner options</h3>
+    <pre><code>{{options}}</code></pre>
+    {% else %}
+    <h3>⛔️ Spawner options error</h3>
+    <pre><code>{{err}}</code></pre>
+    {% endif %}
+</div>